The present case, published in Clinical Case Reports, highlights the importance of biochemical testing for pheochromocytoma in patients with adrenal incidentaloma, even if they are completely normotensive and asymptomatic.A 32‐year‐old Japanese male was admitted for detailed examination for adrenal incidentaloma. He had a family history of paternal type 2 diabetes mellitus, essential hypertension, cerebral infarction, and maternal essential hypertension. The patient had never drank alcohol or smoked cigarettes. His medical history was unremarkable, aside from mild mental retardation. He was considered to have abnormal lung shadow on chest X‐ray at a routine medical checkup in autumn 2012 and visited a local hospital in November of the same year. His BP and pulse rate measured in the seated position were 128/68 mm Hg and 60 beats per minute, respectively. Chest and abdominal computed tomography (CT) showed no abnormalities in the lungs, heart, liver, spleen, pancreas, or kidneys, but it incidentally detected a 6‐cm left adrenal tumor that showed a Hounsfield unit value of 30 and heterogeneous contrast enhancement with an iodine contrast media.Differential diagnosis for his adrenal incidentaloma included lipid‐rich adrenocortical adenoma, malignant tumors, and PC.1 The patient was referred to our hospital for further endocrinological examination of his adrenal incidentaloma.Continue reading about the case here: https://pxmd.co/w1fWU